Ments



No. 621,753. Patented Mar. 2|, |899. N. E. FUNK.v

TABLE RAISING MECHANISM FUR PAPER FEEDING MACHINES.

(Application led Feb. 5, 1898.) (No Model.) 2 Sheets-Sheet I.

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No. 621,753. Patented Mar. 2l, |899. N. E. FUNK.

TABLE RAISING MECHANISH FOB PAPER FEEDING MACHINES.

(Application led Feb. 5, 1898.)

2 Sheets-Sheet 2.

(No Model.)

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1 NTTED STATES PATENT FFIC lNELSON E. FUNK, OF NEW YORK, NQY., ASSIGNOR, BY MESNE ASSIGN- MENTS, OF ONE-HALF TO RUDOLPH F. EMMERIOH, OF SAME PLACE.

TABLE-RAISING MECHANISIVI VFOR PAPER-FEEDING MACHINES.

SPECIFICATION forming part of Letters Patent No. 621,753, dated March 21, 1899. Application tiled February 5, 1898. Serial No. 669,191. (No model.)

To all whom, t may concern:

Beit known that I, NELSON E. FUNK, a citizen of the United States, and a resident of New York, in the county and State of New York, have invented a new and useful Improvement in Table-Raising Mechanism for Paper-Feeding Machines, of which the following is a specication.

My invention relates to an improvement in paper-feeding machines, and is more particularly directed to means for automatically raising the table which supports the sheets to be fed, whereby the top of the stack is kept automatically at about a certain height as the sheets are removed therefrom.

A further object is to lprovide a simple and effective engaging and releasing device, whereby the table is automatically raised and then held stationary until it is desired to again raise it.

In the accompanying drawings, Figure lis a view in side elevation of so much of the machine as 'is pertinent to my present invention. Fig. 2 is a top plan View of the same, and Fig. 3 is a top plan view of aportion of the engaging and disengaging mechanism The means for advancing the sheets of paper from the stack to any suitable machine are not shown in the accompanying drawings, as they form no part of the present invention.

The side frames of the machine are denoted by A A'. The drive-shaft B, with its drivepulley Z), is mounted in rearwardly-extended arms a a', which arms extend from` the upper portions of the side frames or standards A A'. The shaft B is driven from any suitable source of power. (Not shown.)

The table C, which supports the stack of paper D, is mounted between the side frames A A', and it is positively raised and lowered by a pair of chains E E' upon one side of the machine and a second pair of chains E2 E3 upon the other side of the machine. The chain E is secured to the table() at one of its ends, and thence passes upwardly over the sprocket-wheel e, mounted on a shaft e', supported in the side frame A, and from thence it passes downwardly and around a sprocketwheel e2 on a suitable shaft e3, mounted in the From thence the chain'E passes upwardly and is secured to the table O near the forward end of the table. The chain E is secured at one end to the table C near its rear, and from thence extends downwardly around a sprocket-wheel e4 on a shaft e5, which shaft extends across the machine and is mounted in both the side frames A A'. From the sprocket-wheel e4 the chain E extends diagonally upward and around a sprocket-wheel e on a shaft e7, mounted in the side frame A near its top and front. From thence the chain E' extends downwardly and is secured to the table O near its front. The chains E2 and E3 support the opposite side of the table C in exactly the samemanner as thel chains EE'. v

Secured to rotate with the shaft e5 is a gearwheel F, which meshes with a worm g upon a vertical shaft G, which shaft is mounted in suitable bearings g g2 on the side frame A.

The shaft G is provided with a suitable crank and operating-handle g3, whereby the shaft G may be rotated in one direction or the other to rotate the shaft e5, and thereby raise and lower the table positively by means of its chains and sprockets hereinbefore mentioned. Y The shaft G is positively rotated in one direction to raise the table by the following f mechanism: A ratchet-wheel H is secured onv the shaft G to rotate therewith, and a springactuated pawl h is mounted on a suitable V slide I in such position that when the slide is reciprocated the nose of the pawl h willengage the ratchet-wheel H and positively rotate itin one direction. The slide I is mounted between suitable guides on the top of the side frame A, and it is connected by a connecting-rod i. with an eccentric i2 -upon the ICQ engaged from the teeth of the ratchet-wheel H, the spring 7b2 serving to positively cause the pawl to engagethe said teeth when the cam K is operated to release it from engagement with the abutment 7L. The cam K is connected with the free end of an arm Zofa rocklever Lby means of a connecting-rod 7c. The rock-shaft L extends across the machine and is mounted iny the side frames A A near their top. The arm Z is secured to .rock with the shaft L, and it has a yielding connection with the rod k by means of a suitable spring 7s', interposed between the free end of the arm and an abutment 7a2 on the` forward end of the rod 70. A depending arm Z is secured to rock with the shaft L at any desired point between the side frames A A', the free end of the said arm Z resting upon the top of the stackl of paper l). In the present instance the arm Z'carries a suitable antifriction-roller Z2, which rests in contact with the top sheet of paper.

An ordinary slip-clutch M is mounted in position to release the gear-wheel F from the shaft ei for allowing the table C to fall by gravity-without requiring the slow procedure of turning the shaft Gr by hand. y

.Proceeding to describe the operation of my invention, suppose that a stack of paper the top sheet of which is at the required height for being fed to another machine the arm Z will be raised, the rock-shaft L being thereby rocked sufficiently to swing the arm l forwardly. When the arm l is in this position, it has drawn the connecting-rod 7c forwardly land moved the cam K around into engagement with the abutment h on the pawl h and has forced the said pawl out of engagement with the teeth on the ratchet-wheel I-I. The position of the parts, as above described, are shown in Figs. l and 2 of the drawings. The rotation of the drive-shaft B will because of the eccentric i2 operate the slide I and the pawl II, but will not turn the shaft G, as the 4abutment on the pawl will slide along the face of the cam K without engaging the teeth on the ratchet-wheel II. As the sheets of paper are fed from the stack D the arm l will swing downwardly and the arm Z rearwardly. IVhen a su ffcient number of sheets have been fed from the stack to render it desirable to raise the table C, the arm lwill have been rocked rearwardly sufficient-ly far to force the cam K out of engagement with the abutment 7L', thereby allowing the pawl h to engage the ratchet-wheel 1I. Then as the drive-shaft B is rotated and the slide I reciprocated the pawl 71, will rota-te the ratchet-wheel II and thereby the' shaft G. This rotation of the shaft G will, through its worm-and-gear connection with the shaft c, operate the sets of chains and thereby positively raise the table until the stack has reached a height sufficient to positively disengage the pawl 7L from the ratchet-wheel Il.

The arm Z is provided with a yielding connection with the rod 7s for the purpose of preventing any strain upon the pawl 7L, as the arm Zwill have a slight rocking movement against the tension of the spring 71:2 before it will operate the cam K, and when it does rook sufficiently to operate the said cam it will move the cam a suflicient distance to move the pawl h entirely out of engagement with its ratchet-wheel H.

By the arrangement of chains as above described it will be seen that the table C is positively raised and lowered at its front and back upon both sides, and the table is thereby kept perfectly level as it is raised and lowered.

What I claim is- 1. The combination with a drive-shaft, a table for supporting the stack of paper to be fed, table-raising mechanism and a pawl-andratchet connection between the table-raising mechanism and drive-shaft, of a cam loosely mounted on the table-raising mechanism, a roclcshaft having two arms olie of said arms resting upon the stack of paper being fed and a connecting-rod secured attone end to the said cam and at its opposite end to the other arm of the roclcshaft, substantially as set forth.

2. rlhe combination with the drive-shaft, a table for supporting the stack of paper to be fed, table-raising mechanism and a pawl-andratchet connection between the table-raising mechanism and drive-shaft, of a cam loosely mounted on the table-raising mechanism, a rock-shaft having two arms, one of said arms resting upon the stack of paper being fed anda connecting-rod secured at one end to the cam and having a yielding connection at its opposite end with the other arm of the rock-shaft, substantially as set forth.

3. In combination, a table for supporting a stack of paper, a pair ot' side frames, tableraising mechanism, a pair of sprocket-wheels mounted in each side frame near its top, one at its front and the other at its rear, a pair of sprocketwheels mounted in each side frame, near its base, the one at its front and the other at its rear, a shaft extending across the machine between the two side frames for supporting the lower rear sprocket-wheel on each side of the machine, a pair of sprocketchains located upon each side of the machine passing around said sprockets and connected at their ends to the table near its front and rear and means for operating the said crossshaft for positively raising and lowering the table, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of two witnesses, this 3d day of January, 1898.

NELSON E. FUNK.

XVitnesses:

FREDK. HAYNES, C. S. SUNDGREN.

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